Re: [PATCH 3/6] C-language equivalents of include/asm-*/bitops.h

Richard Henderson <[email protected]>
Newsgroups gmane.linux.ports.mips.general,gmane.linux.kernel,gmane.linux.ports.ia64,gmane.linux.ports.hppa,gmane.linux.ports.ppc.devel,gmane.linux.ports.sh.devel,gmane.linux.ports.sparc,gmane.linux.ports.ultrapenguin
Message-ID <[email protected]> 
On Thu, Jan 26, 2006 at 05:34:12AM +0100, Edgar Toernig wrote:
> Why shift at all?

Becuase that *is* a valid architecture tuning knob.  Most risc
machines can't AND with arbitrary constants like that, and loading
the constant might bulk things up more than just using the shift.


r~
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